1. | Johannes Gosses Posthumus Family/Spouse: Afke Everts Bijker. [Group Sheet] [Family Chart]
Children:
- Elske Johannes Posthumus was born about 1845 in Knijpe, Schoterland, FR, NLD.
- Klaaske Johannes Posthumus was born about 1856 in Oranjewoud, Schoterland, FR, NLD.
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